Vise-operating mechanism



April 7,1931. ,4 NYLANDER 1,799,526

VI SE OPERATING MECHANI SM Filed July 21,1930 2 Sheets-Sheet 1 April 7,1931. A. L. NYLANDER 1,799,526

VISE OPERATING MECHANISM Filed July 21, 1950 2 Sheets-Sheet 2 ALBERT L.nrrannnn, on rian rsL-ann ILLINOIS VISE-OPERATING "MECHANISM Applicationfiled 5111721, 1939. Serial 110 469334.

My present invention relates to vise operating mechanism. and has forits object the provision of instrumentalities which will enable a benchworker to operate thestandard form of iron or steel bench vise with thefoot, instead of the screw now generally employed, so that the benchworker will have both hands available for inserting into and removingthe work from the vise, or if these operations can be done with onehand, the operator need not lay down his tool when relocating the workor lnserting a new plece of work 1n the vise.

With modern manufacturing methods Where the same operation has to bedone on a number of articles my apparatus will be found a greateconomizer of time and effort.

Also, as will hereafter be seen, I have provided instrumentalities forcontrolling the pressure exerted by the vise jaws so that when theapparatus is adjusted as desired the jaws will close with exactly thesame pressure until a new adjustment is made. This, also, is a greatadvantage as it obviates the bending or breaking of the work through theundue tightening of the vise.

As will hereafter be seen, my apparatus be easily assembled with oldbench Vises of standard designs aswell as being capable of being builtinto newvises, and to facilitate its shipmentfor installation in oldVises, I have made the treadle arm of the operating lever detachable sothat the apparatus may be I put in a relatively small package forvshipemployed for designating similar parts' I attain the foregoingobjects and results by means of the structure illustrated in theaccompanying drawing, in which- Fig. 1 is a side elevation of a visemounted upon a work bench with my invention assem-l bled therewith. V

ig. 2 is a longitudinal central section of a portion of the base and thestationary and movable jaw.

Fig. 3'is a transverse section on line 8-3 of Fig. 2.

Similar reference characters have been throughout the respective views.

The present standard form of metal bench vise, with which my apparatusis associated,

l3 toward the stationary lever jaw 10.

comprises a stationary jaw 10 integral with a base llfwhich is bolted orotherwise..secured to the bench and'which base is transversely slottedto-receive a reciprocable slide arin 12 on theouter end ofwhich is pr0-=vided, usually-- integral withv the slide arm, the movable jaw .13 ofthe vise. Just below the 1 transverse slot is provided {integral L withthe base a projection or. bracket-14: to assist in supporting the slidearm and movable jawwhen the-latter is in open or extended ,position.

,Theislide arm is .centrallyzchanneled from theibottom, as at 15,to'accommodatei-rthe screw with which the vise is .Ordinarilyppe erated.This screw iseliminated Whenzmy apparatus is employed. Besidestheelimination of the screw from the standa .dvisethe nlys alterationswhich are (necessary are the vertical channeling-of. the bracketlt, asat 16, and the transverse boring thereof, seat 17. I also transverselybore.v I the. slide. arm l2-3l3.-,SP2.CQ.CllllI1V&lS,;aS;a,b:l8,

- My operatinganechanism, in -.-addition -to the viseprovided as above.described, comprises a right angledlever arm 19,.the shorterlarmwhereofis slotted,,.as atQ O, at its end to-permit thepassage ofareinovable pin 21.;gwhich is inserted through; the desired bore 18 inthe slide arm. Below the slot 20 in: theshortarmof. thewright, angled.lever is a bore 22-tlirongh which passes a pinch-pin 23; insertedthrough the transverse bore .17 in thebracket 14.. j I ,lhe' upper edgeofthe long arn ofthe; right angled lever is trans-VerselysIOttedfiatintervals-,-; as at; 9A. I provide. aiweighti25 channelled topermitthepassage-ofthe long arm of the right angled lever and also top ersmit'ithe passage of a'latchstrapQG. The'rear' end of this'latch strap 26is bent upwardly and forwardly, as at 27, to impinge against Y theweight 25 and prevent it from sliding off of the arm. The forward end ofthe latch strap is bent downwardly as at 26a, to enter one of the slots24:.

It will now be seen on that the weight 25 the long arm of the lever-arm19 pivoting on the pin 23 will force the movable vise jaw Ilo operatethe lever to release the vise I provide the treadle arm 29 with theright angled lower end upon which the foot is placed. The upper end ofthe treadle is bent over to provide. the hook 31 for engaging the longarm of the right angled lever 19. A headed pin 32 is provided in thelong arm of the right angled lever arm and a stop pin 3.3 is

provided adjacent thereto. The upper portion of the treadle is insertedunder the head of the pin 32 and against the stop pin 83 and drawndownwardly until the hook 31 engages the right angled lever 19, whichrenders the treadle rigid with respect to the lever arm until the hook31 is disengaged therefrom.

To adjust the vise for a particular piece of work the treadle arm ispushed inwardly sufliciently farto permit the withdrawal of theremovable pin 21. The slide arm 12 is then either pulled out or pushedin the requisite distance and the removable pin is again insertedthrough the bore 18, which is then opposite to the slot 20 in the upperend of the short arm of the right angled lever 19. Also, it may bedesirable to adjust the weight 25, which is done by removing theprojection 26a of the latch strap for the slot 24 in which it 'isinserted and moving the weight backward or forward to the approximatecorrect position which will permit the projection 26a of the latch toengage a slot 24; in the top of the long arm of the right an led lever.

flaving described my invention what 1 claim as new and desire to secureby Letters Patent is: r

1. In combination with a vise having a transversely slotted base and anintegral fixed jaw and a movable jaw carried by a slide co-operatingwith the slot in said base, a right angled lever pivoted to said baseand 'detachably connected with said slide arm, a weight co-operatingwith said right angled lever and a treadle depending from said lever.

2. In combination with a vise having a slotted base and an integralfixed jaw, and a movable jaw carried by a centrally channelled slide armco-operating with the trans verse slot in said base, a right angledlever' arm pivoted in the slot of said slide and to said base, a weightco-operating with said lever arm and a treadle extending from said leverarm.

ALBERT L. NYLANDER.

